Lock



June l2, 1951 w. F. HAMPTON 2,556,918

Loox

Filed Nov. 28, 1947 JNVENToR.

Willard Fllamp'on Patented June 12",VK 1951 LOCK Willard F. Hampton, Hutchinson, Kans., assignor of one-half to Ernest G. Woleslagel, Hutchinson, Kans.

Appiieation November 2s, 1947, seria1N0.7ss,755

4 claims. (o1. 711-217) o This invention relates to locks of a type particularly adapted for use with doors and it is primarily an object of the invention to provide a lock of this kind which can be operated from either side of the door and wherein the mechanism is such as to permit the same to be readily adjusted as the requirements of practice may require.

Another object of the invention isvto provide in a, lock an operating mechanism embodying a spindle together with shiftable means carried by the spindle for normally holding the spindle against rotation, together with means for moving said shiftable means into release position to permit turning of the spindle.

A still further object of the invention is to provide a lock of this kind wherein the operating means thereof includes a Spindle, shifting means carried by the spindle for normally holding the spindle against rotation and means at opposite end portions of the spindle for moving said shifting means to release the spindle for rotation.

In the drawings;

Figure 1 is a view partly in section and partly in elevation of a lock constructed in accordance with an embodiment of the invention, the associated housing being in fragment.

Figure 2 is an enlarged detailed sectional View taken substantially on the line 2-2 of Figure 1.

Figure 3 is an enlarged detailed sectional view taken substantially on the line 3 3 of Figure l.

Figure 4 is a view partly in top plan and partly in section of the assembly illustratedl in Figure l with certain parts omitted and the esoutcheon in separated relation.

Figure 5 is a view in perspective of the key members or bars unapplied and in separated relation and Figure 6 is a View in perspective of the spindle engaging sleeve or cap removed.

In the embodiment of the invention as illustrated in the accompanying drawings, the latch ,casing I is fragmentarily illustrated in Figure l and includes the fixed side plate and a removable side plate I2 as is well known. The latch mechanism'within the casing l0 forms no part of the present invention but is preferably of the character as comprised in my application Serial No. 788,757, filed November 20, 1947.

The side plates I and i2 are provided with the usual openings 23 which receive the conventional bosses 22 of the cam 2| comprised in the latch mechanism.

The cam 2| has disposed axially therethrough an opening 23a. polygonal in cross section .and

2v through which is disposed a spindle 25 of substantially the same cross sectional conguration. Carried by one end portion of the spindle 25 is a knob 26 and at the opposite end portion a knob 21. Provided in the opening 23a of the cam is a relative deep key way 28, which is opened at its opposite ends and continued through the bosses 22. The openings 23 are provided with the radial notches 28a registering substantially with the key Way 28. The spindle 25 is of channel formation from end to end whereby is provided a channel 29 having its open side directed toward the key way 28 of the cam 2| and the channel is of substantially the same width as the key Way. In the channel 29-of the spindle 25 is slidably positioned a two part bar B comprising the elongated members 36 and 31, the inner end portions of which are overlapped. To facilitate such overlapping and to allow desired endwise movement of the members 36 and 31, said members 36 and 31 are vreduced in width in the overlapping portions as at 52. The member 31 has formed in the portion thereof which overlaps the adjacent end of the member 3E, a number of recesses 48. The adjacent end of the member 36 carries a laterally directed finger or lug 5| which is adapted for selective engagement in the notches 48. By this arrangement the eiective length of the bar B can be changed to t the mechanism to doors of different thicknesses, as will be readily apparent. The member 35, at a desired point interediate its ends, is provided with an upstanding lug 38 for engagement within a notch 28a upon proper endwise movement of the bar B and at which time the cam 2| is held against rotation.

1 The end portion of the spindle 25 with which the knob 21 is associated, is enlarged to provide a head 41, the inner or rear portion being tapered while the outer portion is substantially straight. The head 41 is cylindrical and has disposed therearound, a barrel herein disclosed as having its inner portion locked to the inner tapered portion of the head 41 by a stud 54a or otherwise as may be preferred, it only being necessary that the barrel 55 rotate with the spindle 25.

The knob 21 is of a hollow-type and is provided in its inner face Wall with an opening a through Which passes the forward portion of the barrel 55 which is of a length to extend beyond the adjacent end of the spindle 25 and terminate closely adjacent to the outer-wall of the knob 21 as is clearly illustrated in Figure 1 of the drawing.

The outer straight portion of the head 41 of the spind1e'25 is of a diameter less than the internal diameter of the surrounding portion of the barrel 55, whereby is provided suiicient space to receive the inner portion of the sleeve 53 which is snugly engaged within the barrel 55. The sleeve or cap 53 is provided with a diagonal cam slot 55 in which extends a cam follower nnger 49 carried by the outer end portion of the bar member 31. The outer end of the sleeve 53 has disposed thereover a plate 51 having therein a key slot b which substantially registers with the adjacent end of the groove 29 of the spindle 25. This slot or opening b is adapted to receive the inserted end portion of the key K.

The outer end portion of the barrel 55 is provided with a slot 59 extending lengthwise thereof and the outer portion of the barrel 55 is cut away substantially half way therearound to provide a shoulder 6|] at the side of the barrel 55 remote from the slot 59 and, as illustrated in Figure 4, substantially in the plane of the longitudinal center of such slot 59. Snugly fitted within the bore 58 of the barrel 55 are the conventional wards 66 of a character required in accordance with the key K.

A marginal portion of the slot 59 of the barrel 55 and preferably in close proximity to the outer end thereof is provided with a notch 5| in which engages an extremity of a coil spring 54. This spring 64 surrounds the inner portion of anY escutcheon cap 62 which acts in a well known manner as a guide for the insertion of the key K and also as a retainer for the wards 65.

The spring 64 is herein disclosed as positioned between the outstanding peripheral flanges d .c carried by the cap 62 and spaced lengthwise ofy such cap. The inner extremity of the spring Ell is anchored as at e to the outermost flange d.

The outermost ward E6 is provided with an outwardly disposed lug 61 which engages through the slot 59 of the barrel 55 and extends within the internal groove 68 provided along the outstanding cuif 68' defining the opening a in the inner face of the knob 21. This cuff 68' is shown (Figure l) as threading within the outer portion of a holding sleeve 1I, the inner portion of which being eifectively engaged with the inner tapered portion of the barrel 55.

The end portion of the member 36 which is remote from member 31 is provided therealong with the upstanding spaced fingers 50, in an intervening space of which is adapted to be received an inwardly disposed lug 15 carried by an elongated key TM. The key 14 is disposed through a collar 13 and held thereto by a stud 13a or otherwise as may be preferred and this collar 13 surrounds the outstanding cu' 11 of the knob 25, through which an end portion of the spindle 25 is disposed. This key 14 has one end portion received in a key slot 18 disposed lengthwise of the cuff 11. through the inner wall of the hollow knob 25.

After the knob 26 has been properly mounted on the spindle 25, through the medium of the lug the cuir 11 is locked to the spindle 25 by a conventional binding screw 19.

The sleeve 13 is free to slide on the cuff 'il and in practice is preferably upon the inner side of a door so that when it is desired to lock the spindle 25 from the inner side of the door against turning movement, the necessary sliding of the sleeve 13 on the cui will bring the lug 38 into a notch 28a of a plate Il or I2.

The spring F54 is tensioned to constantly urge the cap 62 to turn in a direction to maintain the key slot therein in proper position for the This key slot 18 is also continued .i

introduction of the key into the wards 66 and into the slot 51 in the outer end of the sleeve 53. When the key is inserted and turned in the proper direction, after its inner end has engaged in the slot 51, the sleeve 53 will be turned to force a side of the cam slot 59 against the cam follower finger 49 thereby causing the follower finger to shift the bar B longitudinally in a direction in channel 29, to free the lug 38 from the notch 28a. The knob and spindle may then be turned to turn the cam 2l of the lock or latch mechanism to effect the retraction of the latch. When the knob is released the spring mechanism of the lock will reverse the movement of the lock cam 2l to restore the spindle to a position where the lug 38 will be in alignment with a notch 28a, and upon release of the key after the spindle has returned to this position, the spring 54 will automatically reversely rotate or turn the cap 52 and with it the key and the sleeve 53 to thereby eiect the reverse longitudinal movement of the bar B `and the return of the lug 38 into the notch 28a to again lock or secure the latch mechanism.

As previously pointed out when it is desired to change the position of the lug 38 from the inner side of the door in which the mechanism is mounted, this can be readily effected by shifting the ring 13 in the desired direction longitudinally on the cul-'I` 11 of the inside knob '25. This will eiTect movement of the bar B through the medium of the key 14 and lug 'i5 carried thereby, Awhich is engaged in one of the notches 50.

It is to be understood that the invention as herein disclosed may be varied from the details described and shown without departure from the spirit of the subjoined claims.

I claim:

l. In a door lock mechanism including a latch actuator cam rotatably mounted in a housing and having therethrough an axial passage of polygonal cross section; a spindle of the same cross sectional form as said passage and extending through the passage, said spindle having a channel formed longitudinally therein throughout its length, said cam housing having a wall provided with a notch opening into the cam passage, a bar disposed in said channel for sliding movement lengthwise of the spindle, ,a locking lug carried by the bar for engagement in said notch upon lengthwise movement of the bar to one position whereby to prevent turning of the spindle and the cam in the housing, a sleeve encircling the spindle at one end and having an end wall disposed over the adjacent end of the spindle, said end wall having a key receiving slot, the sleeve having a diagonal cam slot in the wall thereof disposed across the channel, a cam follower finger carried by the adjacent end of the bar and slidably engaged in said cam slot, a knob secured upon the said end of the spindle, a key guide means extending through the knob toward the said slotted end of the sleeve for facilitating the extension of key through the knob for engagement in the slotted end of the sleeve, and a knob secured upon the opposite end of the spindle upon the side of the housing remote from the rst mentioned knob.

2. A door lock mechanism of the character stated in claim l, in which the second mentioned knob has a cui encircling the adjacent end of the spindle, the cuff having a slot opening into the spindle channel, the bar having an end lying in the portion of the channel enclosed by said cuiT and provided with a plurality of notches, a ring encircling the cuff for free movement there- 5 on, a bar lying in the curi' slot and secured to the ring, and a lug carried by the last mentioned bar for engagement in a notch in the adjacent end of the first mentioned bar.

3. A door lock mechanism of the character stated in claim l, in which the said bar is formed in two sections disposed in end overlapping relation in the channel, one of said overlapped ends having a series of notches therein and the other one of the overlapped ends having a laterally projecting finger for selective engagement in the notches whereby the effective length of the bar may be altered.

4. A door lock mechanism of the character stated in claim l, in kwhich the said guide means for the key includes a relatively long barrel enclosing the end of the spindle carrying said sleeve, a slotted closure member rotatably mounted in the end of the barrel remote from the sleeve and adapted to have a key extended therethrough, and spring means coupling the said closure member with the adjacent end of the barrel to be placed under tension upon rotation of a key extending into the guide means whereby to effect reverse rotation of the key to its starting position upon release of the key.

WILLARD F. HAMPTON.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS 

